<template>
  <div class="advancedForm">
    <el-form
      ref="ruleFormRef"
      :inline="true"
      :label-position="'right'"
      :model="formInline"
      class="form-inline"
    >
      <el-row
        :class="{
          'not-show': byHeight && !isExpand,
        }"
        :gutter="gutterWidth"
      >
        <el-col
          :span="item.span"
          v-for="(item, index) in columns"
          :key="item.name"
          v-show="byHeight ? true : index < showRow * 3 || isExpand"
        >
          <el-form-item :label="item.title" :label-width="labelWidth" v-if="item.type === 'input'">
            <el-input clearable v-model="formInline[item.name]" :placeholder="item.placeholder" />
          </el-form-item>
          <template v-else-if="item.type === 'date'">
            <el-form-item :label="item.title" :label-width="labelWidth">
              <el-date-picker
                value-format="YYYY-MM-DD"
                v-model="formInline[item.name]"
                type="date"
                :placeholder="item.placeholder"
              />
            </el-form-item>
          </template>
        </el-col>
      </el-row>
    </el-form>
    <div class="search-btn">
      <el-button type="primary" @click="onSubmit">查询</el-button>
      <el-button @click="resetForm(ruleFormRef)">重置</el-button>
      <el-button link type="primary" @click="isExpand = !isExpand"
        >{{ isExpand ? '合并' : '展开'
        }}<el-icon>
          <arrow-down v-if="!isExpand" />
          <arrow-up v-else /> </el-icon
      ></el-button>
    </div>
  </div>
</template>

<script lang="ts" setup>
  import { reactive, ref } from 'vue'
  import type { FormInstance, FormRules } from 'element-plus'
  const ruleFormRef = ref<FormInstance>()
  let props = defineProps({
    // 宽度
    labelWidth: {
      default: '100px',
    },
    gutterWidth: {
      type: Number,
      default: 24,
    },
    showRow: {
      type: Number,
      default: 1,
    },
    columns: {
      type: Array,
      default: () => [],
    },
    byHeight: {
      type: Boolean,
      default: false,
    },
  })
  const emit = defineEmits(['submit', 'reset'])
  // 收缩展开
  const isExpand = ref(false)

  const formInline = reactive({})

  for (let item of props.columns) {
    formInline[item.name] = null
  }

  const onSubmit = () => {
    emit('submit', formInline)
  }

  const resetForm = (formEl: FormInstance | undefined) => {
    if (!formEl) return
    formEl.resetFields()
    const keys = Object.keys(formInline)
    keys.forEach((key) => {
      formInline[key] = null
    })
    emit('reset', formInline)
  }
</script>

<style lang="scss" scoped>
  .advancedForm {
    display: flex;
    justify-content: space-between;
    .form-inline {
      flex: 1;
    }
    .el-form--inline .el-form-item {
      width: 100%;
      margin-right: 10px;
    }
    .search-btn {
      margin-left: 40px;
    }
    .not-show {
      height: 40px;
      overflow: hidden;
    }
  }
</style>
